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Topic: Finishing/Soundproofing basement (Read 2270 times)

Corey L

I am getting close to begin finishing my basement. I will have one fairly large theater room and want it as sound proof as I can get. I plan to do 2 layers of sheetrock (5/8") with a 3/4"-1" dead air space between them. Should I just sheetrock as normal then attach furings to the original rock & put on my 2nd layer of sheetrock? Will it do any good to put a layer of styrofoam panels between the outer later (cieling) of sheetrock & the floor to the upper level? Last question, 1 of the walls of the room is an exterior wall so it has tons of fiberglass insulation (Minnesota), should I still go with a double layer of sheetrock on this wall or is it not necessary? Any products you would recommend for this type of project? Thanks for all you help.